Just clear it. It's a mileage-based reminder that (if it was always given scheduled service on time and the lift reset), would indicate that some service (oil, tire rotation, etc) is due. Since this is very unlikely, just reset it and go on driving.

 

The full procedure how to reset service light indicator Audi A4. If you like to reset any maintenance oil light after an oil change. Or reset check engine light, airbag light, inspection key or insp errors when maint reqd, for Audi cars. Or any warning light for service reminder which appears on the display.
http://resetservicelight.com/reset-s...cator-audi-a4/

Hear you can fine all information how to reset service reminders for Audi vehicle.